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Ketamine blocks the formation of a gustatory memory trace in rats.

机译:氯胺酮阻止大鼠中味觉记忆痕迹的形成。

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摘要

N-methyl-d-aspartate (NMDA) receptors appear to play a central role in learning and memory processes, as the administration of antagonistic substances of these receptors hinders learning acquisition by using different behavioral paradigms (e.g., Riedel G, Platt B, Micheau J. Glutamate receptor function in learning and memory. Behavioural Brain Research, 2003;140 (1-2):1-47.). In the specific case of conditioned taste aversion, the administration of ketamine seems to affect the acquisition of conditioning when the drugs are administered before the experimental treatment. In this paper we present three experiments designed to analyze the effect of different ketamine doses (25 mg/kg, 50 mg/kg, 75 mg/kg and 120 mg/kg), administered between exposure to a taste (the conditioned stimulus) and the administration of the unconditioned stimulus, on the acquisition of a taste aversion association. The results reveal that higher ketamine doses (75 mg/kg and 120 mg/kg) have a disruptive effect on conditioned taste aversion by impeding the formation of the gustatory trace.
机译:N-甲基-d-天门冬氨酸(NMDA)受体似乎在学习和记忆过程中起着核心作用,因为这些受体的拮抗物质的给药会通过使用不同的行为范式(例如Riedel G,Platt B,Micheau谷氨酸受体在学习和记忆中的功能。行为脑研究,2003; 140(1-2):1-47。)。在条件性厌恶的特定情况下,当在实验治疗之前施用药物时,氯胺酮的施用似乎影响条件的获得。在本文中,我们提供了三个实验,旨在分析在暴露于味觉(条件刺激)和暴露于味觉之间的不同氯胺酮剂量(25 mg / kg,50 mg / kg,75 mg / kg和120 mg / kg)的影响。在获得厌恶感协会后,对无条件刺激进行管理。结果表明,较高的氯胺酮剂量(75 mg / kg和120 mg / kg)通过阻止味觉痕迹的形成,对条件性味觉厌恶具有破坏作用。

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